UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

______________________________

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 OR 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): ~~January~~February 3114, 2011

Structured Products Corp.

on behalf of

CorTS Trust IV for Aon Capital A

(Exact name of registrant as specified in its charter)

Delaware	001-31612	13-3692801
(State or other jurisdiction of incorporation or organization)	(Commission File Number)	(IRS Employer Identification Number)

390 Greenwich Street New York, New York	10013	(212) 723-4070
(Address of principal executive offices)	(Zip Code)	(Registrant's telephone number including area code)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

¨ Written communications pursuant to Rule 425 under the Securities Act (17CFR 230.425)

¨ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17CFR 240.14a-12)

¨ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17CFR 240.14d-2(b))

¨ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17CFR 240.13e-4(c))

Section 8 - Other Events

Item 8.01 Other Events.

This current report on Form 8-K relates to a final distribution made to holders of the Certificates issued by the CorTS Trust IV for ~~AON~~Aon Capital A.

~~Structured~~The ~~Products~~issuer ~~Corp.,~~of the ~~registrant~~underlying ~~hereunder~~securities, ~~acts~~or asguarantor ~~depositor~~thereof, ofor ~~the~~successor ~~CorTS~~thereto, ~~Trust~~as IVapplicable, ~~for~~is ~~AON~~subject ~~Capital~~to ~~A (~~the ~~"Trust").~~information ~~The~~reporting ~~sole~~requirements ~~assets~~ of the ~~Trust are $61,690,000 8.205% Capital~~ Securities ~~due~~Exchange ~~January~~Act 1of 1934, ~~2027~~as amended (the "~~Term~~Exchange ~~Assets~~Act"). Periodic ~~issued~~reports byand ~~Aon~~other ~~Capital~~information ~~A. Pursuant~~required to ~~the~~be ~~trust~~filed ~~agreement~~pursuant ~~governing~~to the ~~Trust,~~Exchange ~~the Trust has issued 2~~Act,~~467,600~~ ~~Corporate–Backed~~by ~~Trust Certificates (~~the ~~"Certificates")~~issuer ~~representing $61,690,000 aggregate certificate principal balance~~ of ~~Notes. Pursuant to~~ the ~~trust~~underlying ~~agreement governing the Trust and the Warrant Agent Agreement~~securities, ~~the~~or ~~Trust~~guarantor ~~has issued 61~~thereof,~~690~~ ~~Warrants~~or ~~(the~~successor ~~"Call Warrants"). U.S. Bank National Association~~thereto, ~~in its capacity~~ as ~~Warrant Agent~~applicable, ~~has~~may ~~received~~be ainspected ~~notice~~and ~~from~~copied ~~the~~at ~~holder of~~ the ~~Call~~public ~~Warrants~~reference offacilities ~~its~~maintained ~~intent~~by ~~to exercise all of~~ the ~~Call~~Securities ~~Warrants~~and toExchange ~~purchase~~Commission (the ~~Term~~"Commission") ~~Assets~~at on450 ~~February~~Fifth 14Street, ~~2011~~N. ~~The~~W., ~~exercise~~Washington, ofD.C. ~~the~~20549. ~~Call~~The ~~Warrants~~Commission isalso ~~conditional~~maintains ~~upon~~a ~~receipt~~site byon the ~~Trustee~~World ofWide ~~the~~Web ~~Warrant~~at ~~Exercise Purchase Price by 1~~"http:~~00 p~~//www.msec.gov" ~~(New~~at ~~York~~which ~~City~~users ~~time)~~can ~~with~~view ~~respect~~and todownload ~~such~~copies ~~exercise~~of onreports, ~~the~~proxy ~~Exercise~~and ~~Date.~~information Ifstatements ~~the~~and ~~Trustee~~other ~~receives~~information ~~the~~filed ~~Warrant~~electronically ~~Exercise~~through ~~Purchase Price, by 1:00 p.m. (New York City time) on~~ the ~~Redemption~~Electronic ~~Date~~Data Gathering, ~~then~~Analysis ~~(i)~~and ~~Class~~Retrieval Asystem. Neither ~~Certificates~~Structured ~~issued~~Products byCorp. nor the ~~Trust~~trustee ~~will~~has beparticipated ~~redeemed~~ in ~~full on~~ the ~~Redemption~~preparation ~~Date at a price~~ of ~~$25.00~~such ~~per~~reporting ~~Class~~documents, Aor ~~Certificate~~made ~~plus~~any ~~accrued~~due ~~interest~~diligence ofinvestigation ~~$0.238888~~with ~~per~~respect ~~Class A Certificate~~ to the ~~Redemption~~information ~~Date~~provided ~~and~~therein. ~~(ii)~~Neither ~~$61,690,000~~Structured ~~notional~~Products ~~value~~Corp. ofnor ~~Class~~the Btrustee ~~Certificates~~has ~~will~~verified ~~be redeemed in full on~~ the ~~Redemption~~accuracy ~~Date~~or ~~with~~completeness ~~payment~~ of ~~accrued~~such ~~and~~documents ~~unpaid~~or ~~interest of $0~~reports.~~244861~~ ~~per~~There ~~$1,000~~can ~~Class~~be ~~B Certificate. If the Certificates are redeemed,~~ no ~~interest~~assurance ~~will~~that ~~accrue~~events onaffecting the ~~Certificates~~issuer ~~after~~of the ~~Redemption~~underlying ~~Date. If~~securities, ~~the~~or ~~Trustee~~guarantor ~~does~~thereof, ~~not~~or ~~receive~~successor ~~the~~thereto, ~~Warrant~~as ~~Exercise Purchase Price~~applicable, ~~then~~or ~~(i) no Certificates issued by~~ the ~~Trust~~underlying ~~will~~securities behave ~~redeemed~~not ~~and~~occurred ~~they~~or ~~will~~have ~~continue~~not toyet ~~accrue~~been ~~distributions~~publicly asdisclosed ifwhich nowould ~~exercise~~affect ~~notice~~the ~~had~~accuracy ~~been~~or ~~given~~completeness ~~and~~of ~~(ii)~~ the ~~Warrantholder~~publicly ~~may~~available ~~elect~~documents todescribed ~~deliver a conditional notice of exercise in the future~~above.

	Underlying Securities Issuer(s) or Guarantor, or successor thereto	Exchange Act File Number
	Aon Corporation	001-07933

Section 9 - Financial Statements and Exhibits

Item 9.01 Financial Statements and Exhibits.

(c)

Exhibits:

Trustee's Report with respect to the February 14, 2011 Final Distribution Date for the CorTS Trust IV for Aon Capital A

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

	By: /s/ Stanley Louie
	________________________________
	Name: Stanley Louie
	Title: Vice President, Finance Officer.

~~January~~February 3114, 2011

EXHIBIT INDEX

Exhibit		Page
1	Trustee's Report with respect to the February 14, 2011 Final Distribution Date for the CorTS Trust IV for Aon Capital A	5

Exhibit 1

To the Holders of:
CorTS Trust IV for Aon Capital A
8.0% Corporate-Backed Trust Securities (CorTS) Certificates
Class A	*CUSIP: 22082Y209
Class B	*CUSIP: 22082YAA8

U.S. Bank Trust National Association, as Trustee for the CorTS Trust IV for Aon Capital A, hereby gives notice with respect to the Final Distribution Date of February 14, 2011 (the "Final Distribution Date") as follows:

1.	The amount of the distribution payable to the Certificateholders on the Distribution Date allocable to principal and premium, if any, and interest, expressed as a dollar amount per $25 Class A Certificates and per $1,000 Notional Amount of Class B Certificates, is as set forth below:

Class	Principal	Interest	Total Distribution
A	$ 25.000000	$ 0.238889	$ 25.238889
B	$ 0.000000	$ 0.244861	$ 0.244861

2.	The amount of aggregate interest due and not paid as of the Distribution Date is $0.000000.

3.	No fees have been paid to the Trustee or any other party from the proceeds of the Term Assets.

4.	$0.00 aggregate principal amount of Aon Capital A 8.205% Capital Securities due January 1, 2027 (the "Term Assets") are held for the above trust.

5.	At the close of business on the Distribution Date, 0.00 Class A Certificates representing $0.00 aggregate Certificates Principal Balance and $0.00 aggregate Notional Amount of Class B Certificates were outstanding.

6.	The current rating of the Term Assets is not provided in this report. Ratings can be obtained from Standard & Poor's Ratings Services, a division of The McGraw-Hill Companies, Inc., by calling 212-438-2400 and from Moody's Investors Service, Inc. by calling 212-553-0377.

U.S. Bank Trust National Association, as Trustee

*The Trustee shall not be held responsible for the selection or use of the CUSIP number nor is any representation made as to its correctness. It is included for the convenience of the Holders.

Filing Compare · STRUCTURED PRODUCTS CORP CORTS TRUST IV FOR AON CAPITAL A